Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
To describe velocity you need to know ____.
a. | speed and direction | c. | direction and acceleration | b. | speed and
time | d. | speed and
acceleration |
|
|
|
2.
|
When you graph the motion of an object, you put ____ on the horizontal axis and
____ on the vertical axis.
a. | speed, time | c. | time, speed | b. | distance, time | d. | time, distance |
|
|
|
3.
|
Acceleration involves a change in ____.
a. | time | c. | speed | b. | direction | d. | both b and c |
|
|
|
4.
|
Acceleration is a change in ____.
a. | speed | c. | displacement | b. | velocity | d. | position |
|
|
|
5.
|
On a speed-time graph, a perfectly straight horizontal line shows the change in
speed is ____.
|
|
|
6.
|
The distance traveled divided by the time taken to travel the distance is
____.
a. | average speed | c. | momentum | b. | mass | d. | speed |
|
|
|
7.
|
An arrow can be used to represent a force. The length of the arrow represents
_____.
a. | direction of the force | c. | mass of the force | b. | strength of the force | d. | acceleration of the
force |
|
|
|
8.
|
Which of the following is an example of an unbalanced force?
a. | book sitting on a table | b. | car sitting in the garage | c. | person on an
elevator going down | d. | person leaning on a
wall |
|
|
|
9.
|
We are able to walk forward because _____.
a. | we push on the air | c. | the air pushes on us | b. | we push on the ground | d. | the ground pushes on
us |
|
|
|
10.
|
Which of the following best completes the phrase?
For every action there is
_____.
a. | a reaction | c. | an opposite reaction | b. | an equal reaction | d. | an equal and opposite
reaction |
|
|
|
11.
|
Forces that are equal in size but opposite in direction are ____.
a. | balanced forces | c. | inertial forces | b. | frictional forces | d. | net forces |
|
|
|
12.
|
The relationship among force, mass, and acceleration is stated in ____.
a. | the law of conservation of momentum | c. | Newton's second law of
motion | b. | Newton's first law of motion | d. | Newton's third law of
motion |
|
|
|
13.
|
According to Newton's second law of motion, ____.
a. | F = mv | c. | a = Fnet /m | b. | F =
m/a | d. | F =
ma |
|
|
|
14.
|
A 3,000-N force gives an object an acceleration of 15 m/s2. The mass
of the object is ____.
a. | 45,000 kg | c. | 200 kg | b. | 1,500 kg | d. | 15 kg |
|
|
|
15.
|
A 300-N force acts on a 25-kg object. The acceleration of the object is
____.
a. | 7,500 m/s2 | c. | 25 m/s2 | b. | 300 m/s2 | d. | 12
m/s2 |
|
|
|
16.
|
The statement "for every action, there is an equal but opposite
reaction" is a statement of ____.
a. | the law of conservation of momentum | c. | Newton's second
law | b. | Newton's first law | d. | Newton's third law |
|
|
|
17.
|
When two birds are pulling on a worm and the worm moves toward the first bird,
you know that the forces are ____.
a. | long-range | c. | unbalanced | b. | action-reaction | d. | balanced |
|
|
|
18.
|
Which of the following, by scientific definitions is NOT work?
a. | lifting boxes of books | b. | pedaling on your bike | c. | holding a book over
your head | d. | pushing a chair across the room |
|
|
|
19.
|
Force is measured in _____.
a. | meters | c. | Joules | b. | kilograms | d. | Newtons |
|
|
|
20.
|
Work is measured in _____.
a. | meters | c. | Joules | b. | kilograms | d. | Newtons |
|
|
|
21.
|
Distance is measured in _____.
a. | meters | c. | Joules | b. | kilograms | d. | Newtons |
|
|
|
22.
|
Cally slid her book over on her table. Which type of energy is transferred to
the book?
a. | kinetic energy | b. | potential energy | c. | kinetic and
potential energy | d. | No energy is transferred. |
|
|
|
23.
|
The unit of measure for power is _____.
a. | joules | c. | watts | b. | seconds | d. | meters |
|
|
|
24.
|
Karla does 25 J of work in 5.0 s carrying her clean clothes upstairs. How much
power did Karla use on the clothes?
a. | 125 W | c. | 5.0 W | b. | 100 W | d. | 4.0 W |
|
|
|
25.
|
Which one of the following is NOT an example of work being done?
a. | the Moon orbiting Earth | b. | pushing a box from the bottom of a hill to the
top of the hill | c. | pulling a sled across a field covered with snow | d. | lifting a bookbag
off the floor |
|
|
|
26.
|
With an increase in altitude, the pressure of the atmosphere _____.
a. | increases | c. | may increase or decrease | b. | remains
constant | d. | decreases |
|
|
|
27.
|
Pressure applied by a fluid _____ with depth.
a. | increases | c. | may increase or decrease | b. | remains
constant | d. | decreases |
|
|
|
28.
|
A cube has a side of 5 cm. It has a mass of 250 grams. The density of the cube
is _____.
a. | 40 g/cm3 | c. | 50 g/cm3 | b. | 1.0 g/cm3 | d. | 2.0
g/cm3 |
|
|
|
29.
|
The buoyant force on an object is dependent on _____.
a. | the object’s density | c. | the volume of the
object | b. | the mass of the object | d. | the shape of the object |
|
|
|
30.
|
The buoyant force on an object is in the _____ direction.
a. | upward | c. | sideways | b. | downward | d. | backwards |
|
|
|
31.
|
An airplane wing is given lift because the shape causes air to move more quickly
over the top of the wing. This is an example of which principle?
a. | Archimedes’ | c. | Galileo’s | b. | Bernoulli’s | d. | Pascal’s |
|
|
|
32.
|
The amount of drag force on an object depends on all of the following except
_____.
a. | the surface area of the object | c. | the color of the
object | b. | the speed of the object | d. | the density of the surrounding fluid |
|
|
|
33.
|
Density is given in ____.
a. | Pa/cm3 | c. | g/s2 | b. | N/m2 | d. | g/cm3 |
|
|
|
34.
|
If you squeeze the bottom of a closed tube of toothpaste, the pressure is
increased ____.
a. | on the bottom of the tube | c. | on the sides of the
tube | b. | on the top of the tube | d. | everywhere in the tube |
|
|
|
35.
|
When a rubber band is stretched, it has ____ energy.
a. | potential | c. | chemical | b. | kinetic | d. | nuclear |
|
|
|
36.
|
A blimp flying around over the Super Bowl has ____ energy.
a. | kinetic and potential | c. | potential and radiant | b. | kinetic and
chemical | d. | kinetic and
electrical |
|
|
|
37.
|
A burning fire produces ____ energy.
a. | kinetic and potential | c. | electrical and thermal | b. | radiant and
thermal | d. | chemical and
radiant |
|
|
|
38.
|
In every energy transformation, some energy is always “lost” as ____
energy.
a. | chemical | c. | electrical | b. | radiant | d. | thermal |
|
|
|
39.
|
In a nuclear power plant, nuclear energy is first changed to ____ energy.
a. | electrical | c. | chemical | b. | thermal | d. | radiant |
|
|
|
40.
|
____ is a fossil fuel.
a. | Oil | c. | Electricity | b. | Water | d. | Nuclear fuel |
|
|
|
41.
|
Which of the following devices does NOT make use of electrical energy?
a. | upright piano | c. | toaster | b. | radio | d. | digital camera |
|
|
|
42.
|
A bus engine transfers chemical potential energy into ____ so that the bus
moves.
a. | thermal energy | c. | electrical energy | b. | gravitational potential
energy | d. | kinetic
energy |
|
|
|
43.
|
Work depends on _____.
a. | force | c. | both force and distance | b. | distance | d. | neither force nor distance |
|
|
|
44.
|
Any form of energy can be transformed into _____ energy.
a. | thermal | c. | radiant | b. | chemical | d. | electrical |
|
|
|
45.
|
A cell phone transmits your voice by transforming _____ energy into _____ energy
and then into _____ energy.
a. | radiant, electrical, sound | c. | sound, electrical,
thermal | b. | sound, thermal, electrical | d. | sound, electrical, radiant |
|
|
|
46.
|
Which of the following is NOT a biomass material?
a. | wood | c. | oil | b. | dried peat moss | d. | manure |
|
|
|
47.
|
Which of the following is NOT a way to conserve energy?
a. | driving to the neighbor’s house | c. | turning off the light in a
room | b. | riding your bike to school | d. | taking a shorter shower |
|
|
|
48.
|
Which of the following is an advantage to using fossil fuels?
a. | does not pollute the air or water | c. | theoretically inexhaustible
supply | b. | widely available | d. | can be used in isolated areas |
|
|
|
49.
|
A hot iron is turned off and cools down to room temperature. The iron cools
because _____.
a. | the iron does not hold heat very well | b. | the room transfers cold energy to the
iron | c. | heat energy is transferred from the warm iron to the cooler room | d. | the thermal energy
is destroyed during an interaction with the room |
|
|
|
50.
|
When a pot of water is put on a stove, the water at the top gets hot primarily
by ____.
a. | radiation | c. | convection | b. | conduction | d. | condensation |
|
|
|
51.
|
Most materials ____ when they are heated.
a. | condense | c. | expand | b. | freeze | d. | contract |
|
|
|
52.
|
A heat engine ____.
a. | changes mechanical energy to thermal energy | b. | changes mechanical
energy into electrical energy | c. | changes thermal energy into mechanical
energy | d. | changes kinetic energy into thermal energy |
|